fix codacy issues

[simonsymhoven]

Fix Codacy issues.

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue

[codecov]

Codecov Report

Merging #131 (9d86952) into master (085ca7c) will not change coverage.
The diff coverage is 66.66%.

❗ Current head 9d86952 differs from pull request most recent head 2492218. Consider uploading reports for the commit 2492218 to get more accurate results

@@            Coverage Diff            @@
##             master     #131   +/-   ##
=========================================
  Coverage     79.03%   79.03%           
  Complexity        5        5           
=========================================
  Files             2        2           
  Lines            62       62           
  Branches         10       10           
=========================================
  Hits             49       49           
  Misses            7        7           
  Partials          6        6           

Impacted Files	Coverage Δ
...kins/plugins/monitoring/util/PullRequestUtils.java	60.00% <ø> (ø)
...in/java/io/jenkins/plugins/monitoring/Monitor.java	80.70% <66.66%> (ø)

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